Automatic attachment for stove or range dampers



(No Model.)

n l I. A. ABBOT. i AUTOMATIC ATTACHMENT POR sToVB 0R 'RANGE DAMPERS.

No. 352,727. 4Pazeated Nov. 16, 1886.

MW l @n ATTORNEYS.

N. PETERS. Pho Lilhogr-ayiwr. wnhrngiun. n.6.

UNITED gSTATES V'PATENT OFFICE..v

ISAAC A. ABBOT, OF DENVER, COLORADO.

AUTOMATIC ATTACHMENT FOR STOVE OR RANGE DAlv/IPERS.y

SPECIFICATION forming part of Letters Patent No. 352,727, dated November 1,6, 1886.

Application mea `January so, less. serial No. 199,307. (No model.)

To all whom it may concern.-

Be it known that I, Isaac A. ABBoT, of Denver, in t-he county o f Arapahoe and State vof Colorado, have invented a new and Improved Automatic Attachment for Stove and Range Dampers, of which the followingvis a full, clear, and eXact description.

This invention pertains to improvements in attachments Wher'eby the heat of ovens or other portions of a stove may be regulated; and theinvention consists of the combinations of parts, including their construction,'substan tially as hereinafter set forth, and pointed out in the claims. f

Reference is to be had to the accompgnying drawings, forming a part ofthis specilication, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a view ofA my improved automatic attachment for stove and range dampers, the view being taken in central vertical section. Fig. 21's a cross-sectional view taken on line x a: of Fig. 1, and Fig. 3 is a vievvv illustrating the arrangement of the disconnect- Referring now to the general construction illustrated in the drawings, A represents the top, and Al the back, of an ordinary form of cooking-stove, the flange to which the stovepipe is secured being shown at B.v

C C represent, respectively, the upper an back Walls of the oven. In supplying a stove such as is partly shown in the drawings with my improved form of automatic damper-regulator, I secure a plate, D, directly beneath the top plate or Wall, C, of the oven, said plate lD being provided with two central apertured and downwardly-projecting plates, E vand F, between Which plates there is securedaU- shaped bracket, G, formed with longitudinal slots a in its 'downwardly-projecting legs, said slots being arranged to receive thetrunnions b b of a vessel, H, provided lwith arear- Wardly-projecting cylinder, I, Which extends through the aperture ofthe plate E, saidvesf sel being also provided with a forwardly-projecting stem, J, Which projects through the plate F, and is provided with a threaded end that is engaged by la thumb-nut, K, a spiral or other form of spring, L, being arranged to force the vessel H toward the'rear of the oven.

Within the cylinder I, I arrange a piston, M,

that is pivotally connected, as at c, toa bar, N, that extends to the rear, through the back Wall, O', ofthe oven, extending upward back of the said Wall, and carrying a forwardly-projecting rack, O, that enga-ges with a pinion, J?,

secured to the lshaft R, on which the damper the damper Sand thus diminish the draft around the oven, so that the heat therein will be diminished. In case itis desired to disconnect the automatic attachment, I provide a disconnecting-cam, U, that is pivotally connected to the Wall C', and arranged to bear upon the under side of the rod N, the arrangement being such that when the cam is turned to bear upon the under side of the rod and raise it the rack O will be thrown out of engagement with the pinion P.

In case the opening of the damper should not be sufficient to diminish the heat within the oven, theV expansion of the mercury contained within the vessel H will cause such vessel to move toward the front of the-oven against the tension of the spring L, the idea being to prevent any possible breaking of the parts.

Although Ihave described a specific connecting mechanism between the piston M and the damper, I do not desire to be limited to such connection, as any other form will do as Well.

` Having thus fully described my invention,

what I claim as new,.and desire to secure by Letters Patent, is-

1. The combination, with a damper, of a vessel, III, provided with trunnions, brackets formed with slots in which said trunnions ride, a piston, M, a spring, L, and a mechanism for establishing a connection between the damper and piston, substantially as described.

2. The combination, With a damper provided with a pinion, of a vessel containing rod N, piston M, spring T, cylinder I, Vessel ro lneiouryand formed witha cylinder, I, and pi'o- H, thatis provided with th stern J, trunnions vided with trunnions, brackets formed with b b, a bracket, G, formed with slots a a, a slots in which the tlunnions of the mercryspring, L, and a. thumb-nut, K, substantially vessel ride, a piston, M, rod N, carrying a as described.

rack, O, and a spring, T, substantially as de- ISAAC A. ABBOT.

scribed. W'itnesses:

3. The combination, with a damper, of the C. II. BELL, following-named elements: pinion P, rack O, B. MARSH. 

